You've got an...interesting idea of marriage, for a race which in most iterations professes not to have marriage or natural births. Your observation of Jor'el's character is also odd. Granted most of what we know of his character is drawn from a computer patterned off his brain, but it'd think it'd be fairly close. And this... isn't. It's very cliche nerd which is quite strange for a culture you note as idolizing scientists.

Freezing breath is slightly odd, because it should be more galeforce winds, but air conditioning can be accomplished by forcing large amounts of air through a small apature in a short time frame, so...
Laser eyes is harder to explain, but the lenses of the eyes reflect light out of the eye as well as take it in. I suppose with the bioaura enhancing everything the light metabolized could be projected out through those same lenses by moving the energy around.
Graviton manipulation... I guess. It doesn't explain his extreme vulnerability to magic though.